Method of supporting data retransmission in a wireless communication system

Abstract

A method of supporting data retransmission in a wireless communication system is disclosed. A method of supporting data retransmission in a wireless communication system which uses multiple carriers includes receiving NACK from a user equipment in response to a transmitted packet, transmitting scheduling information to the user equipment, the scheduling information indicating change of radio resources previously allocated for transmission of a retransmission packet, and transmitting the retransmission packet in accordance with the scheduling information.

1. A method of supporting data retransmission in a wireless communication system which uses multiple carriers, the method comprising:
 receiving a negative acknowledgement signal (NACK) from a user equipment in response to a transmitted packet; 
 transmitting scheduling information to the user equipment, the scheduling information indicating change of radio resources previously allocated for transmission of a retransmission packet; and 
 transmitting the retransmission packet in accordance with the scheduling information, 
 wherein the scheduling information includes a location field of allocated radio resources and wherein the change of radio resources previously allocated is indicated by setting the location field to 0, 
 wherein setting the location field to 0 indicates that the retransmission packet in the current retransmission period will be transmitted in a following retransmission period, and 
 wherein the scheduling information includes information indicating radio resources newly allocated for transmission of the retransmission packet. 
 
     
     
       2. The method of  claim 1 , wherein the radio resources correspond to a time-frequency region. 
     
     
       3. A method of supporting data retransmission in a wireless communication system which uses multiple carriers, the method comprising:
 transmitting a negative acknowledgement signal (NACK) in response to a packet transmitted from a base station; 
 receiving scheduling information from the base station, the scheduling information indicating change of radio resources previously allocated for transmission of a retransmission packet; and 
 receiving the retransmission packet in accordance with the scheduling information, 
 wherein the scheduling information includes a location field of allocated radio resources and wherein the change of radio resources previously allocated is indicated by setting the location field to 0, 
 wherein setting the location field to 0 indicates that the retransmission packet in the current retransmission period will be transmitted in a following retransmission period, and 
 wherein the scheduling information includes information indicating radio resources newly allocated for transmission of the retransmission packet. 
 
     
     
       4. The method of  claim 3 , wherein the radio resources correspond to a time-frequency region. 
     
     
       5. A user equipment in a wireless communication system which uses multiple carriers, the user equipment being configured to perform the steps of:
 transmitting a negative acknowledgement signal (NACK) in response to a packet transmitted from a base station; 
 receiving scheduling information from the base station, the scheduling information indicating change of radio resources previously allocated for transmission of a retransmission packet; and 
 receiving the retransmission packet in accordance with the scheduling information, 
 wherein the scheduling information includes a location field of allocated radio resources and wherein the change of radio resources previously allocated is indicated by setting the location field to 0, 
 wherein setting the location field to 0 indicates that the retransmission packet in the current retransmission period will be transmitted in a following retransmission period, and 
 wherein the scheduling information includes information indicating radio resources newly allocated for transmission of the retransmission packet.